/* rockchip_pcm_enqueue
*
* place a dma buffer onto the queue for the dma system
* to handle.
*/
static void rockchip_pcm_enqueue(struct snd_pcm_substream *substream)
{
struct rockchip_runtime_data *prtd = substream->runtime->private_data;
dma_addr_t pos = prtd->dma_pos;
int ret;
// DBG("Enter::%s----%d\n",__FUNCTION__,__LINE__);
while (prtd->dma_loaded < prtd->dma_limit) {
unsigned long len = prtd->dma_period;
// DBG("dma_loaded: %d\n", prtd->dma_loaded);
if ((pos + len) > prtd->dma_end) {
len = prtd->dma_end - pos;
}
if((len%(prtd->params->dma_size*16) == 0) && (prtd->params->flag == 1))
{
ret = rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 16);
prtd->params->flag = 0;
DBG("size = 16, channel = %d, flag = %d\n",prtd->params->channel,prtd->params->flag);
}
else if((len%(prtd->params->dma_size*16) != 0) && (prtd->params->flag == 0))
{
ret = rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 1);
prtd->params->flag = 1;
DBG("size = 1, channel = %d, flag = %d\n",prtd->params->channel,prtd->params->flag);
}
ret = rk29_dma_enqueue(prtd->params->channel,substream, pos, len);
// if(prtd->params->channel == 2)
DBG("Enter::%s, %d, ret=%d, Channel=%d, Addr=0x%X, Len=%lu\n",
__FUNCTION__,__LINE__, ret, prtd->params->channel, pos, len);
if (ret == 0) {
prtd->dma_loaded++;
pos += prtd->dma_period;
if (pos >= prtd->dma_end)
pos = prtd->dma_start;
} else
break;
}
prtd->dma_pos = pos;
}
static int dma_init(struct rk_mmc *host)
{
int res;
res = rk29_dma_request(MMC_DMA_CHN, &mmc_client, NULL);
if(res < 0)
return res;
res = rk29_dma_config(MMC_DMA_CHN, 4, 16);
if(res < 0)
return res;
res = rk29_dma_set_buffdone_fn(MMC_DMA_CHN, dma_callback_func);
return res;
}
static int __init dma_memcpy_probe(struct platform_device *pdev)
{
int ret;
ret = device_create_file(&pdev->dev, &driver_attr_dmamemcpy);
rk29_dma_request(DMACH_DMAC0_MEMTOMEM, &rk29_dma_memcpy_client, NULL);
rk29_dma_config(DMACH_DMAC0_MEMTOMEM, 8);
rk29_dma_set_buffdone_fn(DMACH_DMAC0_MEMTOMEM, rk29_dma_memcpy_callback);
if(ret)
{
printk(">> fb1 dsp win0 info device_create_file err\n");
ret = -EINVAL;
}
// printk(">>>>>>>>>>>>>>>>>>>>> dam_test_probe ok>>>>>>>>>>>>>>>>>>>>>>>>");
return 0;
}
static int rockchip_pcm_prepare(struct snd_pcm_substream *substream)
{
struct rockchip_runtime_data *prtd = substream->runtime->private_data;
int ret = 0;
DBG("Enter::%s----%d\n",__FUNCTION__,__LINE__);
/* return if this is a bufferless transfer e.g.
* codec <--> BT codec or GSM modem -- lg FIXME */
if (!prtd->params)
return 0;
if(substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = rk29_dma_devconfig(prtd->params->channel,
RK29_DMASRC_MEM,
prtd->params->dma_addr);
}else{
ret = rk29_dma_devconfig(prtd->params->channel,
RK29_DMASRC_HW,
prtd->params->dma_addr);
}
DBG("Enter::%s, %d, ret=%d, Channel=%d, Addr=0x%X\n", __FUNCTION__, __LINE__, ret, prtd->params->channel, prtd->params->dma_addr);
ret = rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 1);
prtd->params->flag = 1;
DBG("Enter:%s, %d, ret = %d, Channel=%d, Size=%d\n",
__FUNCTION__, __LINE__, ret, prtd->params->channel,
prtd->params->dma_size);
ret= rk29_dma_ctrl(prtd->params->channel, RK29_DMAOP_FLUSH);
DBG("Enter:%s, %d, ret = %d, Channel=%d\n",
__FUNCTION__, __LINE__, ret, prtd->params->channel);
prtd->dma_loaded = 0;
prtd->dma_pos = prtd->dma_start;
/* enqueue dma buffers */
rockchip_pcm_enqueue(substream);
return ret;
}
/* rockchip_pcm_enqueue
*
* place a dma buffer onto the queue for the dma system
* to handle.
*/
static void rockchip_pcm_enqueue(struct snd_pcm_substream *substream)
{
struct rockchip_runtime_data *prtd = substream->runtime->private_data;
dma_addr_t pos = prtd->dma_pos;
unsigned int limit;
int ret;
DBG("Enter::%s----%d prtd->dma_period = %d prtd->dma_limit = %d\n",__FUNCTION__,__LINE__,prtd->dma_period,prtd->dma_limit);
if (rk29_dma_has_circular())
limit = (prtd->dma_end - prtd->dma_start) / prtd->dma_period;
else
limit = prtd->dma_limit;
if (DMA_INFIN_LOOP()) {
if(prtd->dma_period % (prtd->params->dma_size*16)){
printk("dma_period(%d) is not an integer multiple of dma_size(%d)",prtd->dma_period,prtd->params->dma_size*16);
rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 1);
}
else
rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 16);
ret = rk29_dma_enqueue_ring(prtd->params->channel,
substream, pos, prtd->dma_period, limit ,true);
if (ret == 0)
pos = prtd->dma_start;
} else {
while (prtd->dma_loaded < prtd->dma_limit) {
unsigned long len = prtd->dma_period;
// DBG("dma_loaded: %d\n", prtd->dma_loaded);
if ((pos + len) > prtd->dma_end) {
len = prtd->dma_end - pos;
}
if((len%(prtd->params->dma_size*16) == 0) && (prtd->params->flag == 1))
{
ret = rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 16);
prtd->params->flag = 0;
DBG("size = 16, channel = %d, flag = %d\n",prtd->params->channel,prtd->params->flag);
}
else if((len%(prtd->params->dma_size*16) != 0) && (prtd->params->flag == 0))
{
ret = rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 1);
prtd->params->flag = 1;
DBG("size = 1, channel = %d, flag = %d\n",prtd->params->channel,prtd->params->flag);
}
ret = rk29_dma_enqueue(prtd->params->channel,substream, pos, len);
// if(prtd->params->channel == 2)
DBG("Enter::%s, %d, ret=%d, Channel=%d, Addr=0x%X, Len=%lu\n",
__FUNCTION__,__LINE__, ret, prtd->params->channel, pos, len);
if (ret == 0) {
prtd->dma_loaded++;
pos += prtd->dma_period;
if (pos >= prtd->dma_end)
pos = prtd->dma_start;
} else
break;
}
}
prtd->dma_pos = pos;
}
